/* QUANTUM STREAM DESIGN SYSTEM */
:root {
    --void-bg: #050505;
    --grid-line: rgba(0, 243, 255, 0.05);
    --neon-cyan: #00f3ff;
    --neon-purple: #bc13fe;
    --text-main: #e0e0e0;
    --text-muted: #8899a6;
    --panel-bg: rgba(10, 20, 30, 0.8);
    --border-glow: 0 0 10px rgba(0, 243, 255, 0.3);
    --font-head: 'Courier New', Courier, monospace; /* Terminal vibe */
    --font-body: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--void-bg);
    background-image: 
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.7;
    overflow-x: hidden;
}

/* --- LAYOUT --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

header {
    border-bottom: 1px solid rgba(0, 243, 255, 0.2);
    background: rgba(5, 5, 5, 0.95);
    position: sticky; top: 0; z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-flex { display: flex; justify-content: space-between; align-items: center; height: 70px; }

.logo { 
    font-family: var(--font-head); font-size: 1.5rem; font-weight: bold; 
    color: var(--neon-cyan); text-transform: uppercase; letter-spacing: 2px;
    text-shadow: 0 0 10px var(--neon-cyan);
}

nav ul { display: flex; list-style: none; gap: 20px; }
nav a { 
    color: var(--text-main); text-decoration: none; font-size: 0.9rem; text-transform: uppercase; 
    transition: 0.3s; border-bottom: 2px solid transparent;
}
nav a:hover { color: var(--neon-cyan); border-bottom-color: var(--neon-cyan); text-shadow: 0 0 8px var(--neon-cyan); }

/* --- HERO SECTION --- */
.hero-section {
    padding: 100px 0;
    text-align: center;
    background: radial-gradient(circle at center, rgba(0, 243, 255, 0.1) 0%, transparent 70%);
    position: relative;
}

.hero-title {
    font-family: var(--font-head); font-size: 3.5rem; margin-bottom: 20px;
    background: linear-gradient(90deg, #fff, var(--neon-cyan));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero-sub { font-size: 1.2rem; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; }

/* CTA BUTTON */
.cta-button {
    display: inline-block;
    padding: 20px 50px;
    background: transparent;
    border: 2px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-family: var(--font-head);
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: 0.4s;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
    animation: pulse 2s infinite;
}

.cta-button:hover {
    background: var(--neon-cyan);
    color: #000;
    box-shadow: 0 0 50px var(--neon-cyan);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 243, 255, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(0, 243, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 243, 255, 0); }
}

/* --- CONTENT BLOCKS --- */
.content-wrapper { display: grid; grid-template-columns: 1fr 300px; gap: 40px; margin: 50px auto; }
.main-article { background: var(--panel-bg); padding: 40px; border: 1px solid rgba(255,255,255,0.1); border-left: 3px solid var(--neon-cyan); }

h1, h2, h3 { font-family: var(--font-head); margin-top: 30px; margin-bottom: 15px; color: #fff; }
h2 { color: var(--neon-cyan); font-size: 1.8rem; border-bottom: 1px solid rgba(0, 243, 255, 0.2); padding-bottom: 10px; }
p { margin-bottom: 20px; font-size: 1.05rem; color: #ccc; }

.highlight-box {
    background: rgba(188, 19, 254, 0.1);
    border: 1px solid var(--neon-purple);
    padding: 20px;
    margin: 20px 0;
    position: relative;
}
.highlight-box::before { content: "⚠ SYSTEM NOTE"; position: absolute; top: -12px; left: 20px; background: var(--void-bg); padding: 0 10px; color: var(--neon-purple); font-size: 0.8rem; font-weight: bold; }

/* --- SIDEBAR & WIDGETS --- */
.sidebar { display: flex; flex-direction: column; gap: 20px; }
.widget { background: rgba(255,255,255,0.03); padding: 20px; border: 1px solid rgba(255,255,255,0.1); }
.widget-title { color: var(--neon-purple); font-weight: bold; margin-bottom: 15px; border-bottom: 1px dashed var(--neon-purple); padding-bottom: 5px; }

.link-list li { list-style: none; margin-bottom: 10px; border-bottom: 1px solid rgba(255,255,255,0.05); padding-bottom: 5px; }
.link-list a { color: var(--text-main); text-decoration: none; display: flex; justify-content: space-between; }
.link-list a:hover { color: var(--neon-cyan); }

/* --- MOBILE --- */
@media (max-width: 768px) {
    .content-wrapper { grid-template-columns: 1fr; }
    .hero-title { font-size: 2rem; }
    .nav-flex { flex-direction: column; height: auto; padding: 20px 0; }
    nav ul { flex-wrap: wrap; justify-content: center; margin-top: 15px; }
}